José Carlos Ardaya (born 4 December 1992), known professionally as Joseca, is a Bolivian singer and songwriter. With over a decade of experience, he has consolidated his presence in the Bolivian music
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16f5e162731a34085c0c60cf0383396cbc8a68f48106a6bbeabdc1ae8e5d192. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0e0deb4-8a6a-4d76-8674-26eba00f4124.json and https://artists.proofprofile.net/proofs/artist/c0e0deb4-8a6a-4d76-8674-26eba00f4124.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7134c7ccc2e63d8b7229b45395c8750e05109e33530517acacb5d076357bbe85. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2004563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960c874781feb408d05d547b3ae38d7660b0608d2afc2b7c112a75b126c30158. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2004564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7cfea5748d0a9abbd6c92928f6ee4f97dfe90e122cc36e65eb161d5d984a1e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2004565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08271d384a15be6ef043235c7d43587ce60a9372ca30482737acf7c7bf397eac. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2004568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd261b8e6818f54443360b921faea66e12c026bfda096f4bf4e60fd0f89def2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2004569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aeea65dd8b1b14beb4792e1f5e4d42b0bce397a0427d7816bc5f6a81dfb0f7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN62107336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7b43efd2ce46d9e626aec9b9b8d4ad5c96873ab86da0bb0885303074ca2207. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c3ac6f56ad37703a7013e1ee7b03dac11fa0f47b5eab93dd3a9a9f7fd861e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2914268ccf49f6d4aa7ff3093e682ec1b71c096aa17947ba31dcdf6616996ed6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4024495d0eb7165c4ea2ac0e599a928f88aaa1f015b904d8fcf81ad0803ec18c. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55256696f234b0156376da1efc3555d024bc4b0aacfde3c5a466ac2ec88c548e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef823f819cd9419f2357bd9396a1af277a65f02784e42ff4d75e3f8c9a725ed. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f619a48a93318255a1d700cb354d93cba63f0269e0071c20d9f3002056682. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f252920c487b7976d605bd0fb2840826a1d71e59bb7659fd60dd0a83b6f5d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef8aa1c78f7bc70e0248c6ac7d4de8aa74a2a3edc569d314636a8145b5633a1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2abcd4f12bf336cbd68e84b33f3af647dc15eb2af2a3af9fbb4289e44148b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea77971e284561f24773e4eaea7d2fd65a3e21ffb2118966ff401ac7a4d685. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2acddcb795f7234e889bcc67059ce9d93e033a856949ec62d5d3a73ca32c03. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea2e475336d02e662b2eb0e3cb5760836a428eb10a2dc55a13269748a41ae7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119613399e810af0d8f7db6a6ff9f2f6a732ac8e6ea2900a0be7bd6f9668774. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d53b9c248d1e1b4a9184143bda745fb7a788b4916b3bb849d9175adc2a6576. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4b3fbf8225ecd819cbdb7d2f78bb1829796727a9e180e1d6722575dec718e8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2114701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9091e234b5b174ea8d94a47a6193ccbf9fbcdd55746a2d1122b20e51648047a1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92341490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a359fe7e2739d30869ae6b5703b3535d322cfc532697f3e58ca84159f88871. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2458044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad7ae9d7ec47948d6464a085ab2149ce7f112878c746160c97171d43d31883. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2458045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880c5d1b5631ec1ff1dc690b0b7043e50fdf75d71badfbf2a1a319062f25b456. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2458047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc962986ac385ff34583d9de01f42f98fdb398c5980565c6cf7e13983fb0a64c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2471453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdec65e02f0ba912ffba98ba1cbe0429fc854c75c8b37115fa74cd92b30b4d0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2471454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204ccc667ad1d5fc775a44a8ce647cdc8c249c4752f902469aa9471625f0693a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2471456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a04c2f2cf1de75d54b231468aa9800840a7a8e0df1a86895616ad3aa92188a0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2471457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e6c7ed4b046ff7f42eae0a5de9af2c88593c4236a60b0985ae57d573c2952. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2471458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6ea6c34f676745c31f57629053371d5642896c76b1e3b3aa3cfb3b1a7c972. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203bd6d300121d8625f199f85076e2848f743b09affe519da436e724c6c3dcf9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5907158babac6b7b8c1fdb874cd702c5d9321563edee4b348b56c7acba500a77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc4cdc7444e2d6f2ae4ae9c8ccd6c5f2c2141c1d2a1140427a77bd5cf792eec. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4d07d14a4e81990991501dbf7b44225892338583d3b7e4f1cf9c4aa2da80c1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b49d1d5cabc6a3c88ab859ceff517011e67a10179912d04d51e75b2b7e357bc. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319ef5619b54fe9eb24785d2601bcfd45d0c7fa26f53c922cbc6c225429a443. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b92c865cc518bc9b68fb62fadc2ca561cda8f1a85754e4c4543d1562198181. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7L2430049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf884ce9fc2108555e21a2f9bdfd3a6cc7cde7fd8638a52a29e158c08fcf04be9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72576659.